Chen Li, Ma Hao, Zeng Zhi, et al. Monte Carlo-based sourceless efficiency calibration method of HPGe γ spectrometer[J]. High Power Laser and Particle Beams, 2013, 25: 201-206. doi: 10.3788/HPLPB20132501.0201
Citation:
Chen Li, Ma Hao, Zeng Zhi, et al. Monte Carlo-based sourceless efficiency calibration method of HPGe γ spectrometer[J]. High Power Laser and Particle Beams, 2013, 25: 201-206. doi: 10.3788/HPLPB20132501.0201
Chen Li, Ma Hao, Zeng Zhi, et al. Monte Carlo-based sourceless efficiency calibration method of HPGe γ spectrometer[J]. High Power Laser and Particle Beams, 2013, 25: 201-206. doi: 10.3788/HPLPB20132501.0201
Citation:
Chen Li, Ma Hao, Zeng Zhi, et al. Monte Carlo-based sourceless efficiency calibration method of HPGe γ spectrometer[J]. High Power Laser and Particle Beams, 2013, 25: 201-206. doi: 10.3788/HPLPB20132501.0201
Key Laboratory of High Energy Radiation Imaging Fundamental Science for National Defense,Key Laboratory of Particle and Radiation Imaging Tsinghua University,Ministry of Education,Department of Engineering Physics,Tsinghua University,Beijing 100084,China
Combining MCNP5 simulation with mathematical computation and utilizing the axial symmetry of detector-crystal geometry, a source-less efficiency calibration method to an HPGe detector is established. The computer code based on this method can calibrate the efficiency of point sources and coaxial cylinder sources without need for MCNP5 in its using process and its runtime is 1 s-1 min. The applicable energy range is 50 keV-3 MeV. Comparing self-written codes result with experimental data and MCNP5s simulation result, the error is below 12 percent and 7 percent respectively, which proves the method is feasibility.
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